Comparison between different models for rheological characterization of sludge from settling tank
| Autor: | Beata Malczewska, Adrian Biczyński |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
lcsh:TC401-506
Environmental Engineering sewage sludge 0208 environmental biotechnology Geography Planning and Development lcsh:River lake and water-supply engineering (General) 02 engineering and technology 010501 environmental sciences Development Pulp and paper industry 01 natural sciences Agricultural and Biological Sciences (miscellaneous) 020801 environmental engineering Settling Rheology rheology viscometer measurement Herschel-Bulkley’s model Sludge 0105 earth and related environmental sciences Water Science and Technology |
| Zdroj: | Journal of Water and Land Development, Vol 34, Iss 1, Pp 191-196 (2017) |
| ISSN: | 2083-4535 |
| Popis: | The municipal sludge characterized non-Newtonian behaviour, therefore the viscosity of the sewage sludge is not a constant value. The laboratory investigation was made using coaxial cylinder with rotating torque and gravimetric concentration of the investigated sludge ranged from 4.40% to 2.09%. This paper presents the investigation on the effect of concentration of rheological sludge behaviour. The three different rheological models: Bingham (plastic model), Ostwald-de Waele (power-law), Hershel-Bulkley’s were calculated by fitting the experimental data of shear stress as a function of shear rate to these models. In this study, the 3-parameter Herschel- Bulkley’s model fits the experimental data best. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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